Vertiscape vertical garden system, might be a good option your north boundary line. You get a good idea of the type of coverage you can get.
Vertical Gardening : For Space Utilization and Landscaping
succulents in a log planter
↗↘↗↘ succulents are very green/sustainable - love them, incredibly versatile and unique!
herb garden wall .... I love the idea of creating a vertical garden for backyard privacy screening. Can't you just imagine the scent in the breeze? Yum!
5 Perennial Vegetables To Plant Once And Enjoy Forever
Its super simple... take an old chair. pop out the seat. spray paint your desired color. place a hanging basket in the seat of the chair. & don't forget to water daily!